Jack spool



July 3, 1928. 1,675,907

" c. P. PARK JACK sPooL Filed Nov. 5, 1926 H MM Patented July 3, 1928.

UNITED STATES PATENT OFFICE.

GEEL i?. PARK, OE LEWIsTON, MAINE,- AssIGNoE yro U. s. EOBBIN a SHUTTLE OOM- rEN-Y, OE PROVIDENCE, RHODE ISLAND, A CORPORATION OE RHODE ISLAND.

JACK SPOOL.

Application ined Ncvember 5, 192s'. serial No. 146,362.

This invention pertains to jack-spools or similar devices which are used in textile manufacturing establishments and relates Vmore particularly to improved means for uniting the head and barrel of such a spool. Spools of this character are usually of large size and when filled ywith yarn are often very heavy and diticult to handle. In order that the yarn may run freely from the spool without breaking or snai-ling, it is essential that the head of the spool fit the end of the barrel so snugly that no perceptible crevice exists between them into which the yarn may enter and jam, but with usual methods of construction it is very ditiicult to maintain this close'fit since the yspool is frequently dropped or otherwise submitted to heavy7 blows during handling which tends to loosen the head and cause .it to separate from the barrel.

As theinjury to the` spool is often occasioned when thespool is full, itis very desirable to provide means for tightening the head which can be manipulated while the spool is filled and/before the' yarn `has had a chance to slip down into the crevice between the head and barrel and in accordance with the present invention I provide such means, employing the gudgeon commonly provided at the ends of the spool as one element of the head attaching means, securing thereby the secondary advantage of positively and reliably retaining the gudgeon in proper operative position.

As it is often necessaryto replace broken spool heads with new ones, I have so devised my improved head attaching and tightening means that the broken head may readily be removed and replaced by a new head, although the attaching means is normally positive in its action sothat the head can not be released accidentally.

- In the accompanying drawings' I have illustrated a preferred embodiment of my invention, together with a' desirable modification thereof and in such drawings',

Fig. l is a fragmentary side Velevation of a spool equipped with my improved Yhead attaching means; y n

Fig. 2 is a section to larger scale substantially on the line 2 2 of Fig. l;

Fig. 3 is a section to larger scale substantially on the line 3 3 of Fig. l;

Fig. 4 is a fragmentary view illustrating certain elements of the attaching means removed from the spool;

F lg. 5 is a section substantially on t-he line 5 5 of Fig. 4l;

Fig. 6 is a side elevation of a gudgeon rod constructed in accordance with the present invention;

Fig 4 is a section to larger scale, substantially on the line 7 7 of Fig. 6, showing a deten't device which cooperates with the gudgeon to prevent undesired rotation of the Alatter;

Y Fig. 8 is a side elevation of an instrument useful in releasing the detent; and Fig. 9 is a section similar to Fig. l but illustrating a modification.

v The' numeral 1 designates the barrel of the spool which is usually of wood, although other material may be employed. This barrel preferably has a projection 2 at each end adapted to enterl an opening in the corresponding head 3. This head may be of wood, liber,'or other material and is preferably furnished with a metallic reinforcing washer 4 having an axial opening aligning with an axial bore in the barrel l of the spool.

The axial bore in the barrel receives the body portion 6 of a gudgeo'n rod adapted to turn freely in suoli bore and which has a shoulder 5 adapted to engage the washer 4. Beyond the shoulder 5 the rod 6 projects as at' 7 to form the gudgeon proper, adapted to be supported in suitable bearings to permit the spool to rotate.

A The inner end 8' of the rod G is externally screw threaded and is provided withv one or more axially 'extending grooves 9 in its screw-threaded surface. Preferably each lg'b'ijoove isV provided with one side wall 10 which is substantially radial, the opposite wall of the groove preferably being less abrupt.

, The barrel 1 is provided at a point spaced from its end rwith a radial socket R within which there is seated a substantially cylindrical nut 1l. This nut is furnished with a diametral internally screw-threaded bore l2 for the reception of the screw-threaded end 8 of the rod 6. Preferably the nut 11 has a drivingfit within the socket R so that no additional fastening means is required,

although I contemplate that any suitable means may be provided for r-etaining the nut in position in the socket R.

The nut is provided with a segmental recess 13 extending inwardly from its outer end, such recess having one face 14 preferably lying in a plane forming a chord of the bore 12 of the nut. Upon this face 14 a leaf spring l is mounted, such spring being secured to the nut by means of a screw 15a adjacent to its outer end and having its free inner end 16 disposed transversely of the bore 12. The edge 17 of this free end of the spring is adapted to seat within the groove 9 of the rod 6 and to engage the radial wall 10 of the groove so as to prevent reverse rotation of the rod.

' In assembling the head and barrel,the

' opening inV the head is itted over the projection 2 at the end of the barrel, the washer 4 being at the Vouter side of thehead, and the rod 6 is-inserted'through the opening in the washer and into the bore in the barrel. K The rod is then rotated by means of its projecting gudgeon portion 7 causing its screwthreaded end 8 to enter the bore 12 in the nut 11.

The rod may be rotated readily in the proper direction to cause it to enter the nut by reason of the yfact that the detent spring 15 rides over the edges of the grooves in the rod as the latter rotates in this direction. 'Ihe gudgeon isv rotated, if necessary by means of a wrench or other suitable appliance, until the shoulder 5 is brought into engagement with the washer 4, thus firmly clamping the head against the barrel 1 and holding the parts in assembled relation.V

In thus assembling the parts the vgudgeon should be turn-ed, after the parts have come nearlyinto proper position, until the detent spring 15 snaps down into the 'groove 9. The parts are thus locked against reverse rotation so. that the headfcan not be removed accidentally. If, at any time during theuse of the spool whether the latter be filled with yarn or not, the head be loosened through wear or rough usage, itv may again bevtightened merely by turning the gudgeon rod 6 in the same manner as in the original assembling of the partsQ In order to disengage the detent 15 from the groove 9 of the rod G, ifA this should b ecome desirable, I providefth'ey nut 11 with a passage 18 extending inwardly from its outer end and opening into the recess lat a point justbelow the free end of the detent spring 15. I then provide an instrument shown in Fig 8, comprising a' rod 19, preferably having a taperedend 20, and if desired providedv with a handle portion 21, such rod being adapted for insertion through the open end of the socket R in the barrel and the passage 18 in the nut so as to lift the spring 15 from thegroove 9, thus per- In Fig. 9 I have shown a slight modification in which the barrel is indicated at 1, the head at 3a, the gudgeon at 7a, the nut at 11LL and the detent spring at 15a. In this instance, instead or' providing the passage 18 through the end of the nut, I have provided thepassage 18 extending through the head ofthe spool and axially ofthe barrel and laterally into the nut beneath the spring 15a. Thile in the arrangement disclosed in the preceding figures it is impossible to disengage the detent spring while the spool contains yarn, it is possible, in accordance with the arrangement shown in Fig. 9, to release the detent spring even though the spool contain yarn This arrangement may be desired under some circumstances although I prefer that disclosed I claim:

' 1. A spool of thel class described comprising a head and a barrel, and means for Jfastening the head upon 'the barrel comprising cooperating screw-threaded portions within Vthe barrel, andmeansgwithinv the barrel normally operative automatically yto lock the screw-threaded portions against loosening as the head is brought into tighter engagement with the barrel.

2. A spool of the class described comprising a head and a barrel, and means for fasteningthe head upon ythe barrel comprising cooperating screw-threaded portions within the barrel, and detent means within the barrel normally engageable with 5 one of the screw-threaded portions and adapted automatically to lock the screw-threaded portions against loosening as the head is brought into tighter engagement with the barrel, said detent means being operative when material is wound upon said spool.

" 3. A spool of the class described comprising a head and a barrel, and means for fastening the head upon the barrel comprising cooperating screw-threaded portions within the barrel, and detent means within the barrel normally engageable with one of the screw-threaded portions and adapted automatically 'to ylock the screw-threaded portions against loosening as the head is brought into tighter engagement with the barrel, said detent means being operative vwhen material is wound upon 'said spool, an opening in the side of the barrel accessible whenthe spool is free from material thereon, said detent being engageable by aninstrument inserted through said vopening to permit its release from normal locking position and loosening'of the head in relation to the barrel.

4. AA spool of the class described comprising a head and a barrel, and means for 1n the preceding figures.

fastening the head to the barrel comprising a gudgeon rod extending through an axial opening in the head into an axial bore in the barrel, the inner end of said gudgeon rod being screw-threaded and provided With an axial groove, said threaded portion of the gudgecn rod engaging a threaded bore in a nut embedded in the barrel, rotation of the gudgeon in one direction drawing the head and barrel into close engagement, and a spring detent carried by the nut and normally engageable with thel groove in the gudgeon rod automatically to prevent reverse rotation of the latter, said spring detent being thus operable While material is Wound upon the barrel.

5. A spool of the class described having a head and a barrel, and means for fastening the head to the barrel comprising a nut embedded in the barrel, a screw-threaded rod extending axially of the head and barrel and engaging the nut, detent means carried by the nut and engageable with a groove in the rod to prevent rotation of the rod in one direction, said detent means permitting tightening of the head upon the barrel by rotation of the rod in the opposite direction, there being a passage extending radially of the barrel and into the nut to give access to the detent when the spool is empty, and to receive an instrument Jfor insertion into the passage for temporarily rendering the detent inoperative.

Signed by me at Auburn, Maine, this 2nd day of November, 1926.

CARL P. PARK. 

